This project is used to create a Docker container which can access the CMS LHC experiment's CVMFS file system. -------------------------------------------- Setting up the container Change the password used to login via ssh to the container - open the Dockerfile file and find the line containing 'chpasswd' - change the default password to something unique In the directory containing the Dockerfile file, run this commands > docker build -t cms-cvmfs-docker . -------------------------------------------- Starting the container for the first time To run the container as a background daemon > docker run -d -P --privileged --name cms-cvmfs -v <local directory on your machine containing files you want to access>:/root/<subdirectory in container to get files> cms-cvmfs-docker To determine which port to use when doing ssh into the container > docker port cms-cvmfs 22 the output should be something like 0.0.0.0:32768 Then to ssh into the container, use the obtained from the previous command, e.g. > ssh root@0.0.0.0 -p 32768 Use the password you set in the Dockerfile Run the following command the very first time you run the container in order to mount the cvmfs file system > ./run.sh -------------------------------------------- Setting up an CMSSW area Once inside the container, you can setup the CMSSW area in the standard way - do the initial setup to get the 'scram' command > source /cvmfs/cms.cern.ch/cmsset_default.sh - move to a directory you want to make a CMSSW work area - see what CMSSW versions are available > scram list -a CMSSW - setup a work area for a specific version, e.g. > scram project CMSSW_8_0_0 -------------------------------------------- Stopping a container After logging out of the ssh session in the docker container, you can temporarily stop the container daemon by doing > docker stop cms-cvmfs -------------------------------------------- Restarting a container You can restart a container after it had been stopped by doing > docker start cms-cvmfs NOTE: after stopping and restarting a container, the port to use when doing ssh may have changed, make sure to rerun > docker port cms-cvmfs 22 -------------------------------------------- Removing a container If you decide you no longer need that particular container (perhaps you want to start another fresh one), you can delete that container instance by doing > docker rm cms-cvmfs -------------------------------------------- Acknowledgements This work was based largely on the following work of others https://twiki.cern.ch/twiki/bin/view/Main/DockerCVMFS https://github.com/cms-sw/cms-docker/blob/master/cmssw/Dockerfile http://cmsrep.cern.ch/cmssw/cms/slc6_amd64_gcc530-driver.txt